#include <QCoreApplication>
#include <iostream>
#include <cmath>
using namespace std;

int main(int argc, char *argv[])
{
    QCoreApplication z(argc, argv);
    cout<<"Vvedite a>0: ";
    int a;
    cin>>a;
    cout<<"Vvedite b>0: ";
    int b;
    cin>>b;
    cout<<"Srednee geometricheskoe: "<<sqrt(a*b);
    return z.exec();
}
